ADVISORIES

• CVE-2023-4785 (NVD)
• GHSA-p25m-jpj4-qcrr
• Vendor Advisory

GEM

grpc

SEVERITY

CVSS v3.x: 7.5 (High)

UNAFFECTED VERSIONS

• < 1.53.0

PATCHED VERSIONS

• ~> 1.53.2
• ~> 1.54.3
• ~> 1.55.3
• >= 1.56.2

DESCRIPTION

Lack of error handling in the TCP server in Google’s gRPC starting version 1.23 on posix-compatible platforms (ex. Linux) allows an attacker to cause a denial of service by initiating a significant number of connections with the server.

Note that gRPC C++ Python, and Ruby are affected, but gRPC Java and Go are NOT affected. 

RELATED

• https://nvd.nist.gov/vuln/detail/CVE-2023-4785
• https://groups.google.com/g/grpc-io/c/LlLkB1CeE4U
• https://rubygems.org/gems/grpc/versions/1.53.2
• https://rubygems.org/gems/grpc/versions/1.54.3
• https://rubygems.org/gems/grpc/versions/1.55.3
• https://rubygems.org/gems/grpc/versions/1.56.2
• https://github.com/grpc/grpc/pull/33656
• https://github.com/grpc/grpc/pull/33667
• https://github.com/grpc/grpc/pull/33669
• https://github.com/grpc/grpc/pull/33670
• https://github.com/grpc/grpc/pull/33672
• https://github.com/advisories/GHSA-p25m-jpj4-qcrr